A bag contains cards numbered 1 through 20. One card is randomly selected. What is the probability that the number on the card is a multiple of 3 or greater than 10? Express your answer as a fraction
There are 20 cards.
How many are multiples of 3? 3, 6, 9, 12, 15, 18 = 6
How many are greater than 10? 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 = 10
Without counting repeats there are 13 that work.
Probability: 13/20
